Feeding mechanism for machine-tools



L. 1:. WAITE. FEEDING MECHANISM FOR MACHINE TOOLS.- AP'PLIICATION FILEDJUNE 7, I9I9.

13340584, Patented May 18,1920;

3 SHEETS-SHEET 1- I 17 2o I6 llllllllll l6 1o 2| I4- (5 v I WITNESSES1,340,584. Patenwa May 18,1920

L. E'. WAITE. FEEDING MECHANISM FOR MACHINE TOOLS.

, APPLICATION man JUNEI. 1919.

3 SHEETS-SHEET 2- WITNESSES INVENT?" WW7 00. W '5 L. E. WAl-TE.

FEEDING MECHANISM FOR MACHINE TOOLS.

APPLICATION mm mun. 1919.

1 ,340,5 4, Patented May 18, .1920.

3 SHEETS-SHEET 3- REDi/Worif 5 Wm LORENZO E. WAITE, OF TOLEDO, OHIO.

FEEDING MECHANISM FOR MACHINE-TOOLS.

Specification of Letters Patent.

Patented May 18,1920.

Application filed June 7, 1919. Serial No. 302,440.

To all w from. it may concern Be it known that I, Lonnnzo E. VAITE, acitizen of the United States, residing at Toledo, in the county of Lucasand State of Ohio, have invented new and useful Improvements in FeedingMechanism for Machine-Tools, of which the following is a specification.

My invention relates to feeding mechanisms for machine tools, and moreparticularly for that class of machine tools known as milling machines.

The principal object of this invention is to provide a feedingmechanism, particularly for milling machines, which will not permit theconnection of the power driving means to more than one feed at a time.In the common types of milling machines it is possible to connect to thedriving power the table-feed, the cross-feed, and the kneefeed or two ofthem at the same time. Careless operators sometimes do connect two ofthese feeds at once to the driving power with disastrous results to themachine or work. It is my principal purpose to make it impossible for anoperator to do this. My invention also comprises some of thesubcombinations of mechanisms whereby portions of the functions of myimproved machine are performed.

Referring to the drawings which form a part hereof, Figure'l is avertical section through the knee of a milling machine, parts thereofand of adjacent parts being shown in elevation and broken away; Fig. 2,an elevation of the middle portion of the knee and adjacent parts, and avertical section of the upper parts of the knee, the section being atright angles to that on which Fig. 1 is taken, and on the line II, Fig.2; Fig. 3, a vertical section on the line III-J11, Figs. 2 and 1; Fig.4L, a front elevation of the central portions of Fig. 2, the side of thecasing being removed to show the mechanism within; Fig. 5, a horizontalsection on the line V-V, Fig. 4; and Fig. 6, a horizontal section on theline VI-VI, Figs. 2 and 1, parts being broken away.

On the drawings, 1 designates the base and 2 the standard of a millingmachine. 3 is the guide on the standard for the knee 4:. 5 is theknee-horn secured tothe base 1 by screws, one marked 6, being shown. Thehorn 5 supports the telescopic nut 7 in which the vertical'knee-elevating' screw 8 rotatably supported in the knee partition 9works. The nut 10 secures the screw 8 to the partition. This screw hasthe bevel gear 11 keyed to it and supports the knee through the rollerbearing 12. The bevelgear 11 is driven by the bevel-pinion 12 on theshaft 13 which projects beyond the front of the knee where it isprovided with a squared portion 1% for the application of a crank orhandle. This shaft has the spurgear 15 keyed thereto.

The knee carries the'cross-screw 16 which lies above the shaft 13 andparallel therewith and has the squared portion 16 provjecting beyond thefront of the knee whereby a handle may be attached for the handoperation of the screw. The shaft 16 carries with it the spur gear 16and its threaded portion works in the feed-nut 17 carried by the block18 secured to the lower side of the cross-feed or carriage 19. Thefeed-nut 17 screws into the block 18 and is itself internally threadedat one end to receive the supplemental nut 20, on which the securing nut21 works, the latter abutting against the ends of the nut 17 and theblock 18. The carriage 19 has travel on the top of the knee in a mannerwell known.

The work-table 22 has travel on thecarriage at a right angle to thetravel of the latter, to which it is connected by the usual dovetails23. The carriage provides the bearings 24 for the feed-screw 25 whichworks in the feed nut 26 carried by the block 27 secured to the lowerside of table 22. The screw 25 has the spur-gear 28 meshing with thegear 29 on the table feed shaft 30 having the bearings 31 and 32 on thelower side of the table. The shaft 30 has the bevel-gear 33 which mesheswith the bevel-gear 3 1 on the shaft 5 The gear 33 is carried by thesleeve 36 loose on the shaft 30 but connectible thereto by the clutch 37operated by the yoke 38, which is actuated by the shaft 39 in anydesired manner.

The shaft 41 is the main driving shaft for the several describedfeed-screws, has bearings in the knee 4;, and lies parallel with theshaft 13 and the carriage feed-screw 16. The sleeve 42 runs loose on theshaft 11 and is keyed to the bevel-gear 43, which meshes with thebevel-gear 43', the latter in turn meshing with the bevel-gear 14E keyedto the sleeve -15 which is loose on the shaft 41. The sleeve 15 carriesthe spur-gear 46 keyed thereto. The shaft 41 also carries the sleeve 17loose thereon andengageable with the adjacent end of the sleeve by thetwo-lip clutch 48. The sleeve 47 is further provided with thelong-toothed pinion 49 inte gral therewith.

The shaft 50 has hearings in the knee and lies parallel with the shaft41 and directly above it. To the shaft 50 is keyed the spurgear 51 andthe bevel-gear 34.

52 is a shaft having hearings in the knee parallel with the shafts 41and 50. The shaft 52 carries the sleeve 53 which is slidable along theshaft and rotatable therewith by the usual spline and groove connection54. One end of the sleeve 53 has the spurgear 55 arranged to mesh withthe gear 49, and the other end bears the spur-pinion 56 which may meshwith the gear 46, when the sleeve is moved on the shaft 52 so as tocause the gear 55 to slide out of mesh with the pinion 49. Thehand-wheel 56 is loose on the shaft 52 at the front of the knee and maybe connected so as to rotate the shaft by pushing in the collar 59 so asto mesh its clutch teeth 58 with the teeth 57 on the wheel 56.

The shaft 60 has its bearings in the knee and is parallel with the shaft52. It carries the two spur-gears 61 and 62, both loose thereon, theformer meshing with the gear 15 and the latter with the gear 16 lVhenthe gear 56 meshes with the gear 46 it also meshes with the gear 61, thegear 55 then be ing out of mesh with the pinion 49. The sleeve 53 whenmoved to its intermediate position has the gear 55 in mesh with the longpinion 4-9 and the gear 56 in mesh with the gear 62, the gear 55 beingout of mesh with the gear 51. ll hen the latter two gears are in mesh,the gear 56 is not in gear with the gear 61 or 62.

The sleeve 53 has the recess 63 to receive the arms 64 of the yoke 65slidable on the guide rod 66 in the knee. The underside of the yoke hasthe rack 67 with which the pinion 68 on the rock-shaft 69 meshes. Thisshaft is operated by the handle 70.

The gears 43 and 44 have their opposing faces adapted to be clutched tothe clutch member 71 slidable on the shaft 41 and keyed thereto. Themember 71 is operated by the yoke or clutch shoe 72 keyed to the shaft 73 operated by any suitable means.

hen it is desired to raise or lower the knee, the shaft 73 is operatedin the proper direction to cause the clutch member 71 to engage theproper bevelgear 43 or 44 for actuating the sleeve 45 in the properdirection. The handle is operated to move the sleeve 53 so as to bringthe gear 56 into mesh with the gears 46 and 61, the chain of drivingconnections from the shaft 41 to the feed-screw 8 being as follows: fromthe shaft 41 through the clutch member 71, the bevel-gear 44 (or thebevel-gears 43, 43, and 44), the sleeve 45, the gears 46, 56, 61, and

15, the shaft 13, and the gears 12 and 11 to which moves the carriage 19toward or from the standards.

If it is desired to move the table 22, the handle 70 is moved to bringthe gear 55 into mesh with the gear 51, the driving connections fromwhich to the feed-screw 25 being as follows: from the gear 51 throughthe shaft 50, the bevel-gears 34 and 33, the shaft 30, and thespur-gears 29 and 28 to the feedscrew 25 which moves the table 22 atright angles to the feed of the carriage and the knee.

My invention is not limited to the precise combinations and structuresdescribed and shown as many changes may be made therein withoutdeparting from the spirit of my lnvention.

I claim:

1. In a machine of the class described, a standard, a knee movablevertically thereon. a carriage carried by the knee and movablehoriaontally thereon, a table carried by the carriage and movablehorizontally thereon and at right angles to the movements of thecarriage, separate feed-screws for the knee, carriage, and table, adrive-shaft, and means whereby only one feed-screw can be con nected atone time to the drive-shaft.

2. In a machine of the class described. a standard, a knee movablevertically thereon. a carriage carried by the knee and movablehorizontally thereon, a table carried by the carriage and movablehorizontally thereon and at right angles to the movements of thecarriage, separate feed-screws for the knee. carriage. and table, adrive-shaft, a pair of gears driven by the shaft, separate gears fordriving the screws, and a pair of slidable gears secured together andarranged to be simultaneously meshed with either one of the shaft drivengears and only one of the screw-driving gears.

3. In a machine of the classdescribed, a standard, a knee movablevertically thereon. a carriage carried by the knee and movablehorizontally thereon, a table carried by the carriage and movablehorizontally thereon and at right angles to the movements of thecarriage, separate feed-screws for the knee. carriage, and table, adrive-shaft, a pair of gears, means for connecting one or both gears tothe shaft, separate gears for driving the screws, and a pair of slidablegears Secured together and arranged to be simultaneously meshed witheither one of the shaft-driven gears and only one of the screw-drivinggears.

4c. In a machine of the class described, a standard, a knee movablevertically thereon,

a carriage carried by the knee and movable horizontally thereon, a tablecarried by the carriage and movable horizontally thereon and at rightangles to the movements of the carriage, separate feed-screws fortheknee, carriage, and table, a drive-shaft, coaxial sleeves thereon, agear on each sleeve, one of the gears having elongated teeth, andseparate gears for driving the screws, a pair of slidablegears securedtogether, one adapted to slide out of mesh with the elongated gear andto slide, while in mesh with the elongated gear, into mesh with two ofthe screwdriving gears, but with only one at a time, and the otheradapted to connect the remaining shaft-driven and screw-driving gearswhen the gear which meshes with the clon gated gear is out of meshtherewith.

In a machine of the class described, a standard, a knee movablevertically thereon, a carriage carried by the knee and movablehorizontally thereon, a table carried by the carriage and movablehorizontally thereon and at right angles to the movements of thecarriage, separate feed-screws for the knee, carriage, and table, adrive-shaft, coaxial sleeves thereon, a gear on each sleeve, one of thegears having elongated teeth, means for releasably connecting thesleeves to the shaft, and separate gears for driving the screws, a pairof slidable gears secured together, one adapted to slide out of meshwith the elongated gear and to slide, while in mesh with the elongatedyear, into mesh with two of the screw-driving gears, but with only oneat a time, and the other adapted to con-- nect the remainingshaft-driven and screwdriving gears when the gear which meshes with theelongated gear is out of mesh therewith. c

6. In a machine of the class described, a standard, a knee movablevertically thereon, a carriage carried by the knee and movablehorizontally thereon, a table carried by the carriage and movablehorizontally thereon and at right angles to the movements of thecarriage, separate feed-screws for the knee, carriage, and table, adrlve-shaft, coaxial sleeves thereon, a gear on each sleeve, one of theelongated gear, into mesh with two of the screw-driving gears, but withonly one at a time, and the other adapted to connect the remainingshalt-dr1ven and screwdriving gears when the gear which meshes with theelongated gear is out of mesh therewith.

7. In a machine of the class described, a standard, a knee movablevertically thereon, a carriage carried by the knee and movablehorizontally thereon, a table carried by the carriage and movablehorizontally thereon and at right angles to the movements of thecarriage, separate feed-screws for the knee,

carriage, and table, a drive-shaft, coaxial sleeves thereon, a gear oneach sleeve, one of the gears having elongated teeth, means forreleasably connecting the sleeves to the shaft, a third sleeve on theshaft, means releasably connecting the same to the shaft, means forrotating the last sleeve and the other two sleeves in either direction,and separate gears for driving the screws, a pair of slidable gearssecured together, one adapted to slide out of mesh with the elongatedgear and to slide, while in mesh with the elongated gear, into mesh withtwo of the screw driving gears, but with only one at a time, and theother adapted to connect the remaining shaft-driven and screw-drivinggears when the gear which meshes with the elongated gear is out of meshtherewith.

8. In a machine of the class described, a standard, a knee movablevertically thereon, a carriage carried by the knee and movablehorizontally thereon, a table carried by the carriage and movablehorizontally thereon and at right angles to the movements of thecarriage, separate feed-screws for the knee, carriage, and table, adrive-shaft, a rotary slidable-member having three positions, and meanswhereby the said member is connected to rotarily drive the feed-screws,but only one at each position, and means for rotating the said member.

Signed at Toledo, Ohio, this lth day of June, 1919.

LORENZO E. WAITE.

